... and a slightly different shape. I can see a lot of confusion as you move X7 from left hand to right hand or when you have it in your pocket and don't know if you are pressing buttons on the right side or the left side. I hope there is still a chance to make playback buttons slightly different instead of being identical and symmetrical to volume and power.
Don't get me wrong, X7 looks awesome, and I have no doubt it will sound awesome. Just questioning the logic behind buttons symmetrical shape and placement.
I personally wouldn't have issues knowing which is which while in-pocket-manipulation, because you have the bumped backside that helps as reference.
i.e.: left of bump -> volume, right of bump ->track skip